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Articles 16141 - 16170 of 19131
Full-Text Articles in Entire DC Network
Achieving Complex Motion With Fundamental Components For Lamina Emergent Mechanisms, Brian Geoffrey Winder
Achieving Complex Motion With Fundamental Components For Lamina Emergent Mechanisms, Brian Geoffrey Winder
Theses and Dissertations
Designing mechanical products in a competitive environment can present unique challenges, and designers constantly search for innovative ways to increase efficiency. One way to save space and reduce cost is to use ortho-planar compliant mechanisms which can be made from sheets of material, or lamina emergent mechanisms (LEMs). This thesis presents principles which can be used for designing LEMs. Pop-up paper mechanisms use topologies similar to LEMs, so it is advantageous to study their kinematics. This thesis outlines the use of planar and spherical kinematics to model commonly used pop-up paper mechanisms. A survey of common joint types is given, …
Rolling In The Dough: The Continued Surge In Individual Contributions To Presidential Candidates And Party Committees, David B. Magleby
Rolling In The Dough: The Continued Surge In Individual Contributions To Presidential Candidates And Party Committees, David B. Magleby
Faculty Publications
The dramatic growth in the numbers of individuals contributing to presidential candidates and the surge in total amounts being contributed has generated substantial media attention in the 2008 presidential election. Individuals are giving more, in part, because the 2002 Bipartisan Campaign Reform Act (BCRA) raised contribution limits and encouraged "max-out" donors to contribute to party committees as well. This study compares individual contributions to presidential candidates and party committees in 1999, the year prior to the last pre-BCRA presidential election, and in the years prior to post-BCRA presidential elections.
Does Marriage And Relationship Education Improve Couples' Communication? A Meta-Analytic Study, Victoria Lael Blanchard
Does Marriage And Relationship Education Improve Couples' Communication? A Meta-Analytic Study, Victoria Lael Blanchard
Theses and Dissertations
Using the results of 65 reports, this study examined the effect of marriage and relationship education (MRE) on couples' communication, and accounted for various moderators of this effect, including method of assessment and unit of analysis. This study is part of a comprehensive meta-analysis of MRE evaluation research conducted since 1975 (k = 124 codable reports). Overall, MRE produced modest but reliable effects on couples' communication. These effects were maintained at follow-up assessments and were not affected significantly by publication bias. No differences in effect were found for gender. Observational assessments did produce larger effects than self-report assessments. MRE produced …
Fundamental Components For Lamina Emergent Mechanisms, Joseph O. Jacobsen
Fundamental Components For Lamina Emergent Mechanisms, Joseph O. Jacobsen
Theses and Dissertations
This thesis introduces lamina emergent mechanisms (LEMs) and presents components that can be used as building blocks to create LEMs capable of more complex motion. As the name suggests, lamina emergent mechanisms are fabricated out of planar materials (the lamina) but their motion is out of that plane (emergent). Lamina emergent mechanisms can provide benefits that include reduced manufacturing costs and minimal volume when in the planar state. The compact initial state of LEMs is beneficial in reducing shipping costs, especially in volume critical applications. LEMs also exhibit the potential benefits of compliant mechanisms, namely increased precision, reduced weight, reduced …
Throughput Constrained And Area Optimized Dataflow Synthesis For Fpgas, Hua Sun
Throughput Constrained And Area Optimized Dataflow Synthesis For Fpgas, Hua Sun
Theses and Dissertations
Although high-level synthesis has been researched for many years, synthesizing minimum hardware implementations under a throughput constraint for computationally intensive algorithms remains a challenge. In this thesis, three important techniques are studied carefully and applied in an integrated way to meet this challenging synthesis requirement. The first is pipeline scheduling, which generates a pipelined schedule that meets the throughput requirement. The second is module selection, which decides the most appropriate circuit module for each operation. The third is resource sharing, which reuses a circuit module by sharing it between multiple operations. This work shows that combining module selection and resource …
Characterizing The Three-Dimensional Behavior Of Bistable Micromechanisms, Brian B. Cherry
Characterizing The Three-Dimensional Behavior Of Bistable Micromechanisms, Brian B. Cherry
Theses and Dissertations
Compliant bistable micromechanisms have been proposed for use in applications such as switches, relays, shutters, and sensing arrays. Unpublished laboratory testing suggests that off-axis forces may affect the bistable nature of fully compliant bistable micromechanisms (FCBMs). The actuation forces required to snap the FCBM from one stable equilibrium position to another can be altered if the off-axis forces are applied to the mechanism during transition between stable positions. Understanding the three-dimensional characteristics of these mechanisms and the effect of eccentric loading conditions would be helpful in design and analysis of FCBMs. Two 3-D FEA models were developed for analysis and …
A Conceptual Model Of Groundwater Flow In Spring Valley, Nv, And Snake Valley, Nv-Ut, Jeremy Micheal Gillespie
A Conceptual Model Of Groundwater Flow In Spring Valley, Nv, And Snake Valley, Nv-Ut, Jeremy Micheal Gillespie
Theses and Dissertations
A geochemical study of major springs and wells in Spring Valley, Nevada, and Snake Valley, Utah-Nevada was initiated in response to the Clark, Lincoln and White Pine Counties Groundwater Development Project proposed by the South Nevada Water Authority (SNWA). Water budget estimates suggest that interbasin flow accounts for a significant portion (~25%) of the water budgets in Spring and Snake Valleys. Although interbasin flow is possible in some areas, alternative plausible explanations place significant uncertainty on water budget allocations. To examine the plausibility of local and interbasin flow paths the groundwater flow in Spring and Snake Valleys was evaluated using …
Intent Attributions And Aggression: A Study Of Children And Their Parents, David A. Nelson, Carianne Mitchell, Chongming Yang
Intent Attributions And Aggression: A Study Of Children And Their Parents, David A. Nelson, Carianne Mitchell, Chongming Yang
Faculty Publications
This research aimed to further clarify the relationship between children’s self-reported hostile intent attributions (for ambiguous instrumental or relational provocations) and peer-reported aggression (physical and relational) in 500 fourth-grade children. In addition, we examined whether parents’ intent attributions might predict children’s intent attributions and aggression. Both parents (mothers and fathers) in 393 families completed intent attribution questionnaires. Results showed, consistent with past research, that boys’ instrumental intent attributions were related to physical aggression. Children’s relational intent attributions, however, were not associated with relational aggression. Contrary to expectations, most children responded with hostile intent attributions for relational provocations. Finally, in regard …
Path Planning For Unmanned Air And Ground Vehicles In Urban Environments, Andrew B. Curtis
Path Planning For Unmanned Air And Ground Vehicles In Urban Environments, Andrew B. Curtis
Theses and Dissertations
Unmanned vehicle systems, specifically unmanned air vehicles (UAVs) and unmanned ground vehicles (UGVs), have become a popular research topic. This thesis discusses the potential of a UAV-UGV system used to track a human moving through complex urban terrain. This research focuses on path planning problems for both a UAV and a UGV, and presents effective solutions for both problems. In the UAV path planning problem, we desire to plan a path for a miniature fixed-wing UAV to fly through known urban terrain without colliding with any buildings. We present the Waypoint RRT (WRRT) algorithm, which accounts for UAV dynamics while …
The Role Of Perceived Parental Knowledge On Emerging Adults’ Risk Behaviors, Laura M. Padilla-Walker, Larry J. Nelson, Stephanie D. Madsen, Carolyn Mcnamara Barry
The Role Of Perceived Parental Knowledge On Emerging Adults’ Risk Behaviors, Laura M. Padilla-Walker, Larry J. Nelson, Stephanie D. Madsen, Carolyn Mcnamara Barry
Faculty Publications
The purpose of this study was to gain a clearer understanding of the relation between parents’ knowledge of their emerging-adult children and emerging adults’ risk behaviors. Participants included 200 undergraduate students between the ages of 18 and 25 (121 women, 78 men; Mage = 19.59, SD = 1.62) and both of their parents. Results revealed that knowledge of the emerging-adult child’s activities varied as a function of parent- and child-reports, and that child outcomes associated with parental knowledge were generally positive, including less drinking, drug use, and risky sexual behavior (although this varied as a function of reporter). The …
Report On The First Ncc Image Use Protocol Task Force Meeting, Journal Of East Asian Libraries
Report On The First Ncc Image Use Protocol Task Force Meeting, Journal Of East Asian Libraries
Journal of East Asian Libraries
No abstract provided.
Sociocultural Aspects Of Russian-Speaking Parents' Choice Of Language Of Instruction For Their Children In Estonia, Raija Pini Kemppainen, Scott Ellis Ferrin, Steven J. Hite, Sterling C. Hilton
Sociocultural Aspects Of Russian-Speaking Parents' Choice Of Language Of Instruction For Their Children In Estonia, Raija Pini Kemppainen, Scott Ellis Ferrin, Steven J. Hite, Sterling C. Hilton
Faculty Publications
In most cases, parents whose native language is not predominant in the area they live in have no opportunity to choose the language for their children's instruction in schools. However, in some areas language minority families have options regarding the language of instruction (e.g., Finns in Sweden and Russians in Estonia). This article focuses on language choice from the viewpoint of these families. Typically, discussions of language of instruction have focuses on integrative issues, such as creating loyal citizens, or instrumental or practical issues, such as education or labor market opportunities (Mtes 2004). Choice, however, may have deeper cultural and …
Dairy Culture: Industry, Nature And Liminality In The Eighteenth-Century English Ornamental Dairy, Ashlee Whitaker
Dairy Culture: Industry, Nature And Liminality In The Eighteenth-Century English Ornamental Dairy, Ashlee Whitaker
Theses and Dissertations
The vogue for installing dairies, often termed "fancy" or "polite" dairies, within the gardens of wealthy English estates arose during the latter half of the eighteenth century. These polite dairies were functional spaces in which aristocratic women engaged, to varying degrees, in bucolic tasks of skimming milk, churning and molding butter, and preparing creams. As dairy work became a mode of genteel activity, dairies were constructed and renovated in the stylish architectural modes of the day and expanded to serve as spaces of leisure and recreation. Dairies were often lavishly outfitted to create a delicate and clean atmosphere, a fancy …
Open Educational Resources: Enabling Universal Education, David Wiley, Tom Caswell, Shelley Henson, Marion Jensen
Open Educational Resources: Enabling Universal Education, David Wiley, Tom Caswell, Shelley Henson, Marion Jensen
Faculty Publications
The role of distance education is shifting. Traditionally distance education was limited in the number of people served because of production, reproduction, and distribution costs. Today, while it still costs the university time and money to produce a course, technology has made it such that reproduction costs are almost non-existent. This shift has significant implications, and allows distance educators to play an important role in the fulfillment of the promise of the right to universal education. At little or no cost, universities can make their content available to millions. This content has the potential to substantially improve the quality of …
Electromagnetic Considerations For Communicating On Correlated Mimo Channels With Covariance Information, Michael A. Jensen, Jon W. Wallace
Electromagnetic Considerations For Communicating On Correlated Mimo Channels With Covariance Information, Michael A. Jensen, Jon W. Wallace
Faculty Publications
Previous results for correlated block-fading MIMO channels with covariance information indicate guaranteed capacity growth with additional transmit elements and that in rapidly fading channels, vanishing element spacing maximizes capacity. However, because prior analysis neglects antenna electromagnetic coupling, the observations are not necessarily valid for small inter-element spacing. This work applies radiated power considerations to the analysis to demonstrate that additional elements do not always increase capacity and that vanishing element spacing is not optimal. An effective gain metric is introduced that quantifies the performance increase with additional transmitters in the presence of transmit correlation and mutual coupling. Performance simulations using …
Sedimentological And Biological Analyses On Hobble Creek Prior To Restoration, Jaron Michael Brown
Sedimentological And Biological Analyses On Hobble Creek Prior To Restoration, Jaron Michael Brown
Theses and Dissertations
Hobble Creek is one of several inflowing streams and rivers into Utah Lake, Utah, USA. Historically, June sucker (Chasmistes liorus), a federally listed endemic fish, spawned up all the major inflowing streams and rivers but is now limited to just the Provo River. The State of Utah has recently proposed restoring the lower reaches of Hobble Creek for additional spawning and rearing needs. This restoration effort will likely involve removal of migration barriers, re-aligning the stream, and removing existing levees that prevent floodplain access. These changes have raised several questions that this study aims to answer. First, what are the …
Simulation And Visualization Of Environments With Multidimensional Time, Luther A. Tychonievich
Simulation And Visualization Of Environments With Multidimensional Time, Luther A. Tychonievich
Theses and Dissertations
This work introduces the notion of computational hypertime, or the simulation and visualization of hypothetical environments possessing multidimensional time. An overview of hypertime is provided,including an intuitive visualization paradigm and a discussion of the failure of common simulation techniques when extended to include multidimensional time. A condition for differential equations describing hypertime motion to be amenable to standard time-iterative simulation techniques is provided,but is not satisfied by any known model of physics. An alternate simulation algorithm involving iterative refinement of entire equations of motion is presented,with an example implementation to solve elastic collisions in hypertime. An artificial intelligence algorithm for …
Using Interactive Diagrams To Teach Graduate Students About Statistical Power, Eric D. Hunter
Using Interactive Diagrams To Teach Graduate Students About Statistical Power, Eric D. Hunter
Theses and Dissertations
This report describes the design, development, implementation, and evaluation of a web-based tutorial designed to teach graduate students about the statistical concept of power. It contains a literature review of techniques used to teach statistics, similar computer-based programs for representing the concept of power, and instructional theories that pertain to web-based tutorials. It describes the process of designing and developing this tutorial in detail. The results section contains a description of the product implementation with three different groups and discusses the qualitative and quantitative findings from each of these implementations. Finally, there is a discussion of the tutorial's strengths and …
Wireless Authentication Using Remote Passwords, Andrew S. Harding
Wireless Authentication Using Remote Passwords, Andrew S. Harding
Theses and Dissertations
Current authentication methods for wireless networks are difficult to maintain. They often rely on globally shared secrets or heavyweight public-key infrastructure. Wireless Authentication using Remote Passwords (WARP) mitigates authentication woes by providing usable mechanisms for both administrators and end-users. Administrators grant access by simply adding users' personal messaging identifiers (e.g., email addresses, IM handles, cell phone numbers) to an access control list. There is no need to store passwords or other account information. Users simply prove ownership of their authorized identifier to obtain wireless access.
“Common-Sense” Meets The Book Of Mormon: Source, Substance, And Prophetic Disruption, Terryl L. Givens
“Common-Sense” Meets The Book Of Mormon: Source, Substance, And Prophetic Disruption, Terryl L. Givens
Review of Books on the Book of Mormon 1989–2011
No abstract provided.
Book Notes, Farms Review
Book Notes, Farms Review
Review of Books on the Book of Mormon 1989–2011
No abstract provided.
Of Science, Scripture, And Surprise, Duane Boyce
Of Science, Scripture, And Surprise, Duane Boyce
Review of Books on the Book of Mormon 1989–2011
Review of Trent D. Stephens and D. Jeffrey Meldrum. Evolution and Mormonism: A Quest for Understanding.
The Travel Diaries And Letters
The Travel Diaries And Letters
The Bridge
At the dockside in Copenhagen on 21 March 1894, a worried father stood and waved goodbye to his eldest son, who had made the big decision of his life at the age of seventeen and was setting out to realize his dreams in the vast, unknown land of America. "Write soon, Christian," was the father's last word to his son. The very next day, Christian wrote his first letter
Toward The Ultimate Book Of Mormon Time Line, Don L. Brugger
Toward The Ultimate Book Of Mormon Time Line, Don L. Brugger
Review of Books on the Book of Mormon 1989–2011
Review of Christopher Kimball Bigelow. The Timechart History of Mormonism: FromPremortality to the Present.
Artificial Neural Network Application On Estimation Of Aquifer Transmissivity
Artificial Neural Network Application On Estimation Of Aquifer Transmissivity
Journal of Spatial Hydrology
The present study focuses on the unexplored area of application of artificial neural network in groundwater hydrology. Three models, each based on artificial neural networks, are applied for prediction of zonal transmissivity. These techniques can be considered as black box models that can predict output values for given range of input values after establishing an acceptable relation which is obtained by training the system. The study is based on coupling of Finite Element Method (FEM) - Artificial Neural Network (ANN) model, which serve as forward (FEM) and inverse (ANN) models. An inverse technique using ANN is considered for estimating parameters …
The Book Of Mormon And Dna Research: Essays From The Farms Review And The Journal Of Book Of Mormon Studies, Daniel C. Peterson
The Book Of Mormon And Dna Research: Essays From The Farms Review And The Journal Of Book Of Mormon Studies, Daniel C. Peterson
Maxwell Institute Publications
In the last few years, the topic of how DNA research fits in with the text of the Book of Mormon has become increasingly divisive. Now, for the first time in one volume, respected DNA scientists, geneticists, and Book of Mormon scholars provide their views on DNA and the Book of Mormon.
Effect Of Food Deprivation On The Metabolic Profile Of Llamas (Lama Glama) In The Letanias Experimental Station - Viacha, Edwin Eddy Ali Quisbert
Effect Of Food Deprivation On The Metabolic Profile Of Llamas (Lama Glama) In The Letanias Experimental Station - Viacha, Edwin Eddy Ali Quisbert
Theses and Dissertations
In the highlands, where regular agriculture and livestock are not viable, raising camelids is the only means of subsistence for rural families. While grazing during the dry season in the high Andean region, llamas face serious nutritional deficiencies due to limited forage availability. This study was done at the experimental station of the Benson Agriculture and Food Institute located in the community of Letanias which is in the municipality of Viacha. The objective was to determine the effect of food deprivation on the metabolic profile of blood plasma (concentration of urea-nitrogen, total protein, albumin, and creatinine) as well as the …
Bible Gateway And The New Testament Gateway: Two Biblical Websites, Ryan Combs
Bible Gateway And The New Testament Gateway: Two Biblical Websites, Ryan Combs
BYU Studies
BibleGateway.com is a website designed for online study and access of the scriptures. Unlike other sites that may have only one version of the Bible in one language, BibleGateway boasts thirty-five different languages and twenty-one versions of the Bible in English. Among the oldest are Jerome’s Vulgate (AD 405) in Latin, the Wycliffe New Testament (1382) in English, the Luther Bible (1545) in German, and the King James Bible (1611) in English. There are also many modern versions, such as the New International Version and modern translations in Chinese, Arabic, and Creole. For those who would prefer to listen to …